How to learn the transmitter to the receiver?

Question:

Answer:

This learning method is suitable for many of our models, including series of S1U-DC12, S1U-AC220, S2U-DC12, S2U-AC220, S4U-DC12, S4U-AC220, S1X-DC12, S1X-AC220, S2X-DC12, S2X-AC220.It's easy to setup, with characteristics of strong anti-interference and low error rate.